Do you need a license to work as a plumber in North Dakota?
Yes. In North Dakota, anyone in the business of a master plumber, journeyman plumber or plumber’s apprentice anywhere with a public water or sewer system must be registered and licensed by the state board of plumbing. A business installing plumbing must have a licensed master plumber in charge of the work at all times, except that in cities of under 1,000 people and in rural areas a licensed journeyman plumber may run the business. A person may do plumbing that meets the board’s standards on premises they own and occupy as a residence, unless a local ordinance forbids it, and working for pay as a plumber without a license is unlawful. This is N.D. Cent. Code §§ 43-18-10, 43-18-11, 43-18-23.
| What | North Dakota |
|---|---|
| Plumber license | State plumber license where public water/sewer exists |
Source
N.D. Cent. Code §§ 43-18-10, 43-18-11, 43-18-23
Read the statute in the North Dakota Century Code (North Dakota Legislative Branch): ndlegis.gov.
Checked against the statute on November 13, 2026.
This is a summary of a published statute, not legal advice. Rules change, local ordinances can add to them, and the terms of a specific lease may differ. Check the citation and speak to a lawyer before acting.
How Seayora uses this rule
A contractor on Seayora keeps each license with its issuing state, its expiry date and the last four digits of its number, and the business is warned before one lapses — on the website and both phone apps. A customer finding a pro on Seayora sees whether a license is on file.
Guides on this rule
- Contractor License Requirements by State: Every Trade — Which states require a state license for electricians, plumbers, HVAC, general and home improvement contractors, with the statute for each.
Compare this rule in every state
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- Every North Dakota rule on one page
The same question in other states
- Alabama
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- Delaware
- District of Columbia
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- Hawaii